And as a result of this incident, NYCT is reporting that the 1 train is suspended between Chambers St and South Ferry.

mta.info service alert for suspended (1)

Edit: as per NotifyNYC — Notification issued 2/16/12 at 11:10 AM. 1 train service has been restored between Chambers Street and South Ferry (MN). Expect residual delays and continued emergency service activity near the World Trade Center.